Portable-heater.



OLIVER C. KNIFE, 0F PALO- PATENT OFFICE.

ALTO, CALIFORNIA, ASSIGNOR TO ALF. HARRIS, OF

MERCED, CALIFORNIA.

PORTABLE HEATER.

Specification of Letters Batent.

Applicationvled October 17, 1908. Serial No. 458,275;

To all 'whom 'it 'may concern: Be it known that I, OLIVER C. KNIFE, a citizen of the UnitedA States, v residing at Palo Alton, in the county of Santa Clara and State of California,.have invented a new and useful Portable Heater, of'which the following is a speciticationl` insuch full and clear terms as will enable lthoseskilled in the art to construct and use the same.

This invention relates to a heater used vfor the purpose `of warming thehands o1' feet' inbed, or in a sleigh or other place where it may be necessary.

n object of the invention istol produce a heater which will adapt' itself to the shape of a persons body,an d which may beniade.

in such units as may be desired, as many being sf'ecu'red together as may be necessary for the given purpose.

,Another object of the'invention is to produce` a heater which .will be easily and' cheaply constructed, and which will have no vprojecting wires, save the inlet wires, to

catch on bedding, etc.

VIn thedrawing, in which the same numeral v is applied to the same portion thigoughouhvFigure "1* is a Vertical sectional view of one member of the heater, Fig. 2 is a'vliewof several sections secured together and showing a cover used when it is not desired to have the heater 'conform to the shape of'fa person, Fig. 3 is 'a'sect'io-nal view at right anglesv to that shown in Fig. 1 and sections.

l The heater is formed of the back portion F and the front portion A. whichv may be of any suitable material as mineral wool, the two parts being secured to each other in any suitable-manner. vThe back'F vhas-a space in which is seated the non-conducting-member A. which is flat and has the .showing the meansfor connecting two` ofthe heating'element B wound thereon, binding posts at the upper end being usedl to make -theproper connection with-the heating vele# mei-'it B, a fusible wire R being inserted be-l tween the posts .S and E to =prevent the elem'entB from becoming too hot,or burning out.;l The core upon which the coil is wound and the covering therefor are composed of heaters shown all that is necessary is to connect them by means of the fiexible flaps H, shown in .F ig. 3, the tacks M holding the twosections together. If it isdesired to use the heater outV of doors', or in a place where persons would be liable to place their feet on it the metal cover J vmay be used -to protect it from'rough usage. j If it is to beused in a '-bed', or when a person islying down it may be made .to conform to the shape ofthe back or arm or leg as thecase may be.

`When the heater is t0 lbe used it is con- Patented May 9, 1911.

'When it is desired to use a number of the nectedwith a source of current supply .and

the current isallowed to pass as long as may 'bewished- It may be used in this way as 'long as thecurrent is turned on, but 'since the materials of which the heater is con structed are good abs'oibents of heat it will give 0H heat for a considerable time after .the salne has been taken away from the source of current, and in this way it may be used on a journey, the heat being retained for several hours. y

Having thus described my invention, what I claim as new and desire to secure by Lettersv Patent of the United States is as follows:

A portable heater comprising?. series of heating members each compo-sed'of a substantially flat body and a heating element passing around said flat body, al non-conductingcover for each of said fiat bodies and they heating element a-ioundthe same, vfiexible hinges secured at the edgesof the .several membersy and connecting them, and 90 subscribed witnesses.

presence of the two y @LIVER C. KNIFE.

Witnesses zv y EDITH W. BURNI-IAM,

FRANK P. MEDINA.

'I this 10thday of OctoberA. D. v1908 in thel 

